Django Admin: How to access the request object in admin.py, for list_display methods?

I solve my issue this way (for django under 1.7):

class MyClassAdmin(admin.ModelAdmin):

    def queryset(self, request):
        qs = super(MyClassAdmin, self).queryset(request)
        self.request = request
        return qs

Now i can use self.request in any place

UPDATE

Changed in Django 1.6:
The get_queryset method was previously named queryset.

class MyClassAdmin(admin.ModelAdmin):

    def get_queryset(self, request):
        qs = super(MyClassAdmin, self).get_queryset(request)
        self.request = request
        return qs